Company lists · Data refreshed September 2026

Top 25 AI research staffing companies worldwide

Name: AI research staffing companies worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 27, 2026 18,868 companies tracked

RevenueBase identified 18,868 AI research staffing companies worldwide as of September 2026 and tracks 459,198 professional contacts across them, including 64,344 with verified work emails. The United States is the largest market and London the largest hub.

This list covers AI research staffing companies worldwide, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 27, 2026. Country and city lists for AI research staffing companies follow the table.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 27, 2026 86% judged on-target in blind review

18,868Companies

459,198Contacts tracked

64,344Verified emails

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The 25 largest AI research staffing companies worldwide

Ranked by team size

Top 25 of 18,868 AI research staffing companies worldwide, ranked by team size, largest first. Data refreshed Sep 27, 2026. RevenueBase Smart Search rates how each company's information relates to AI research staffing companies: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	KELLY	Indirect evidence	Troy, MI, United StatesHQ checked Sep 27, 2026	10001+	30,378 contacts →
	Indirect evidence “We’ve been helping organizations find the people they need longer than any other company in the world.” Source: RevenueBase Database · checked Sep 27, 2026
2	Quess Corp Limited	Partial evidence	Bangalore, IndiaHQ checked Sep 27, 2026	10001+	19,876 contacts →
	Partial evidence “Established in Bengaluru in 2007, Quess Corp Limited (BSE: 539978, NSE: QUESS) is India’s largest and a global leader in staffing and workforce solutions.” Source: RevenueBase Database · checked Sep 27, 2026
3	Insight Global	Indirect evidence	Atlanta, GA, United StatesHQ checked Sep 27, 2026	n/a	15,553 contacts →
	Indirect evidence “Insight Global is an international talent and consulting company that delivers business outcomes in an ever-changing world.” Source: RevenueBase Database · checked Sep 27, 2026
4	Turing	Partial evidence	San Francisco, CA, United StatesHQ checked Sep 27, 2026	1,001-5,000	6,094 contacts →
	Partial evidence “Turing is one of the world’s fastest-growing AI companies accelerating the advancement and deployment of powerful AI systems.” Source: RevenueBase Database · checked Sep 27, 2026
5	Spherion	Partial evidence	Atlanta, GA, United StatesHQ checked Sep 27, 2026	10001+	4,263 contacts →
	Partial evidence “We’re Spherion-a staffing and recruiting pioneer that’s been driving careers and helping businesses grow for over 75 years.” Source: RevenueBase Database · checked Sep 27, 2026
6	Select Staffing	Partial evidence	Atlanta, GA, United StatesHQ checked Sep 27, 2026	10001+	3,934 contacts →
	Partial evidence “Select Staffing is a leading provider of temporary staffing and employment services in the U.S, with nationwide operations across multiple contingent staffing sectors.” Source: RevenueBase Database · checked Sep 27, 2026
7	Artech L.L.C	Partial evidence	Morristown, NJ, United StatesHQ checked Sep 27, 2026	5,001-10,000	3,674 contacts →
	Partial evidence “Artech is the largest Women-Owned IT Staffing Firm in the U.S, with 34+ years of experience powering workforce transformation for Fortune 500 companies and public-sector…” Source: RevenueBase Database · checked Sep 27, 2026
8	Beacon Hill	Partial evidence	Boston, MA, United StatesHQ checked Sep 27, 2026	1,001-5,000	3,238 contacts →
	Partial evidence “Beacon Hill was founded to set a new standard in search, career placement and flexible staffing.” Source: RevenueBase Database · checked Sep 27, 2026
9	24 Seven Talent	Indirect evidence	NY, United StatesHQ checked Sep 27, 2026	n/a	2,554 contacts →
	Indirect evidence “24 Seven partners with companies to get marketing, creative, and digital work done by providing the right talent, innovation, and insights.” Source: RevenueBase Database · checked Sep 27, 2026
10	Airswift	Indirect evidence	Houston, TX, United StatesHQ checked Sep 27, 2026	501-1,000	2,128 contacts →
	Indirect evidence “We support STEM professionals looking for jobs with exceptional firms in the technology and engineering sectors.” Source: RevenueBase Database · checked Sep 27, 2026
11	Mindlance	Indirect evidence	Union, NJ, United StatesHQ checked Sep 27, 2026	1,001-5,000	2,096 contacts →
	Indirect evidence “Mindlance is a global Talent, Teams, Projects, and Workforce Solutions partner, serving leading enterprises across industries since With a strong footprint across multiple…” Source: RevenueBase Database · checked Sep 27, 2026
12	Rose International	Partial evidence	Chesterfield, MO, United StatesHQ checked Sep 27, 2026	5,001-10,000	2,061 contacts →
	Partial evidence “Rose International is a leading provider of Staffing and Total Talent Solutions to corporations and government agencies, employing thousands of people across the U.S, Canada and…” Source: RevenueBase Database · checked Sep 27, 2026
13	NLB Services	Partial evidence	Alpharetta, GA, United StatesHQ checked Sep 27, 2026	5,001-10,000	1,958 contacts →
	Partial evidence “Founded in 2007, NLB Services is a global AI-led technology and business transformation organization that helps enterprises accelerate growth, enhance operational resilience, and…” Source: RevenueBase Database · checked Sep 27, 2026
14	Remedy Intelligent Staffing	Partial evidence	Atlanta, GA, United StatesHQ checked Sep 27, 2026	10001+	1,948 contacts →
	Partial evidence “Remedy Intelligent Staffing is a nationwide professional staffing organization with more than 50 years of recruiting and selection expertise to match job candidates with positions…” Source: RevenueBase Database · checked Sep 27, 2026
15	Avance Consulting	Indirect evidence	London, United KingdomHQ checked Sep 27, 2026	501-1,000	1,927 contacts →
	Indirect evidence “Avance Consulting is a global organization focused on delivering innovative talent solution services to some of the most renowned companies in the world, across industries that…” Source: RevenueBase Database · checked Sep 27, 2026
16	Spectraforce	Partial evidence	Raleigh, NC, United StatesHQ checked Sep 27, 2026	1,001-5,000	1,845 contacts →
	Partial evidence “Founded in 2004, SPECTRAFORCE® is a global staffing and workforce solutions company that helps organizations build high-performing teams across healthcare, technology, financial…” Source: RevenueBase Database · checked Sep 27, 2026
17	Addison Group	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 27, 2026	1,001-5,000	1,840 contacts →
	Indirect evidence “Addison Group provides comprehensive talent solutions and consulting services across diverse practice areas, including Non-Clinical Healthcare, Information Technology (IT), Human…” Source: RevenueBase Database · checked Sep 27, 2026
18	Magna Infotech	Indirect evidence	Bangalore, IndiaHQ checked Sep 27, 2026	10001+	1,702 contacts →
	Indirect evidence “We are the largest IT staff augmentation provider in India, with employees spread across 500+ skill sets.” Source: RevenueBase Database · checked Sep 27, 2026
19	Global Empregos Ltda	Indirect evidence	Santo André, BrazilHQ checked Sep 27, 2026	n/a	1,695 contacts →
	Indirect evidence “Durante os anos 80, o mundo testemunhou o surgimento de uma nova ordem.” Source: RevenueBase Database · checked Sep 27, 2026
20	E-Solutions	Indirect evidence	San Jose, CA, United StatesHQ checked Sep 27, 2026	1,001-5,000	1,669 contacts →
	Indirect evidence “Empowering Technology Services” Founded in 2003, we are in our 22th year of structured growth.” Source: RevenueBase Database · checked Sep 27, 2026
21	Elite Staffing INC	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 27, 2026	10001+	1,661 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 27, 2026
22	Nesco Resource	Indirect evidence	Mayfield Heights, OH, United StatesHQ checked Sep 27, 2026	501-1,000	1,599 contacts →
	Indirect evidence “Companies need talent.” Source: RevenueBase Database · checked Sep 27, 2026
23	Infotree Global Solutions	Indirect evidence	Plymouth, MI, United StatesHQ checked Sep 27, 2026	1,001-5,000	1,545 contacts →
	Indirect evidence “Infotree Global was founded in 2002 in a small office in Canton, MI, Infotree Global had a clear mission; To bring the world’s best talent together with the greatest companies…” Source: RevenueBase Database · checked Sep 27, 2026
24	Bcforward	Indirect evidence	Indianapolis, IN, United StatesHQ checked Sep 27, 2026	5,001-10,000	1,448 contacts →
	Indirect evidence “BCforward is a global talent and technology solutions partner helping organizations accelerate outcomes through people, platforms, and expertise.” Source: RevenueBase Database · checked Sep 27, 2026
25	SELF	Indirect evidence	Houston, TX, United StatesHQ checked Sep 27, 2026	n/a	1,431 contacts →
	Indirect evidence “We are a Full Service Solutions Company specializing in placements of professionals in Information Technology, Finance/Accounting, Energy (front, mid and back office)…” Source: RevenueBase Database · checked Sep 27, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: AI research staffing companies. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names AI research staffing companies.
Partial evidence: Its own public description names part of AI research staffing companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name AI research staffing companies. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 18,868 AI research staffing companies worldwide

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AI research staffing companies worldwide at a glance

As of Sep 27, 2026

14.0%Verified-email coverage

24.3Average contacts per company

11-50Median size (employees)

2.5%Largest-city concentration · London

Sep 27, 2026Page data refreshed

Companies by employee count

1-10

8,172

11-50

6,263

51-200

2,879

201-500

870

501-1,000

311

1,001-5,000

228

5,001-10,000

10001+

Email recency is reported on each country list linked below.

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among AI research staffing companies, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
Coverage: Every country. Country and city lists for AI research staffing companies are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “AI research staffing companies”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names AI research staffing companies), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among AI research staffing companies, and records with no verified work email.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
Ranking: Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification: Every listed company carries at least one verified work email, 64,344 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh: This page's figures were pulled from the company graph on September 27, 2026. Lists refresh periodically as the graph is re-checked.
Corrections: Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

AI research staffing companies by location

93 lists · largest first

Every AI research staffing companies list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

Cities

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names AI research staffing companies, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many AI research staffing companies are there worldwide?

RevenueBase identified 18,868 AI research staffing companies worldwide as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

KELLY, headquartered in Troy, tops this list with the largest team on record.

Which country has the most AI research staffing companies?

The United States leads with 7,646 companies, followed by India (3,306) and the United Kingdom (1,074). Every AI research staffing companies list by country and city is linked on this page.

Which city has the most AI research staffing companies?

London leads with 470 headquartered companies, followed by Hyderabad (343) and New York (319).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 64,344 verified decision-maker contacts tracked across these 18,868 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 27, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase Smart Search, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.